Machine for cutting sheet-form material



W. F. SIMPSON.

MACHINE FOR CUTTINGYSHEET FoRM MATEmAL.

APPufinoN mwocr. 6. 1917.

1 ,3 44, 1 5 5 Patented June 22, 1920.

- 3 SHEETS-SHEET w k N Suoemfoz arm) 9 W. F. SIMPSON. MACHINE FOR CUTTING SHEET FORM MATERIAL.

W. F. SIMPSON.

MACHINE FOR CUTTING SHEET FORM MATERIAL.

APPLlCATlON FILED OCT. 6,1917- 1,344, 155 Patented June 22, 1920.

. I 3 SHEETS-SHEET 3- M 0/2 F cm:- Cr/ 1 (3/3 C8 UNITED STATES PAJENT. OFFICE.

WILLIAM F. SIMPSON, OF KNOXVILLE, TENNESSEE, ASSIGNOR TO CYRUS KEHR, I

TRUSTEE, OF KNOXVILLE, TENNESSEE.

MACHINE FOR CUTTING SHEET-FORM -MATERIAL.

Specification of Letters Patent. Patented J 22 1920 Application filed October 6, 1917. Serial No. 195,170.

To all whom it may concern:

Be it known that I, VVILLIAM F.-SI1\ I 1 SON, a citizen of the United States, reslding at Knoxville, in the county of Knox and State of Tennessee, have invented a new and useful Improvement in Machines for Cut ting Sheet-Form Material, of which the following is a specification, reference being had to the accompanying drawing.

My improvement relates particularly to machines designed for cutting sheet metal by a step-by-step method. The improvement is applicable to the machine described inLetters Patent of the United States, No. 1,208,8i7, granted to me December 19, 1916, for a Machine for cutting sheet-form material; and Letters Patent of the United States, No. 1,098,376, granted June 2, 1914, to Charles B. Gray for a Machine for cutting sheet metal; andLetters Patent of the United States, No. 1,098,377, granted June 2, 1914, to Charles B. Gray for a Machine for cutting sheet-form material.

The object of the present improvement is to facilitate the operation of the machines of the above-mentioned patents. provement is specially concerned with means for disposing of waste pieces cut from the sheets of material upon which the machine is operating and for supporting the stationary cutter.

In the accompanying drawings,

Figure 1 is a side elevation of the forward portion of a machine embodying my improvement, portions being omitted;

Fig. 2 is an elevation of the portion of the machine shown in Fig. 1, looking toward the right; i

Fig. 3 is an upright section on the line, 33, of Fig.2;

Fig. 4 is a horizontal section on the line, 4-4, of Fig. 2;

I Fig. 5 is an upright section on the line, 55, of Fig. 2, looking toward the left.

Fig. (3 is an upright section on the line, 6-6, of Fig. 1, looking toward the right;

Fig. 7 is a detail view of a chair casting separated from other parts.

Referring to said drawings, A is a part of the body of the machine. B is another of the machinesof the patents above-menin the drawings. The im-.

tioned. The upper face, A1, of the part, A, of the machine is approximately horizontal; but its left hand or outer part is cut away to form a lower horizontal face, A2. Between said faces is an upright shoulder, A3. 011 the face, A2, is seated a chair casting, C. This is shown separately in Fig. 7.

At its front and at its rear, said chair casting has a horizontal flange, C1. Beneath each of said flanges, the part, A, of the body has a flange, A4. At the front and at the rear of said chair, an upright bolt, C2, extends through the adjacent flanges, A4 and C1. By means of said bolts,

.saidchair casting is firmly secured upon the face, A2, of the part, A. The apertures, C3, through which the bolts, C2, extend are larger than the diameter of said bolts. This permits adjusting the chair casting horizontally when said bolts have been loosened.

The chair casting comprises a right hand bearing, C6, and a left hand bearing, C7, in which rests the horizontal drive shaft, C8, to which power is applied by means not shown For such means, reference is made to thepatents above mentioned.

Adjacent the left hand face of the right hand bearing, C6, the shaft, C8, is reduced in diameter. By this means an annular shoulder, C9, directed toward the left, is formed. Adjacent said shoulder, the reduced part of said shaft is surrounded by a wheel,C10. Immediately at the left of said wheel is a spacing ring, C11. Immediately at the left of said ring is a wheel, C12, which is a companion to the wheel, C10. At the left of the wheel, C12, and within the bearing C7, a sleeve, C13, surrounds the shaft, C8. The right hand end of saidsleeve bears against the wheel, C12,

' and the left hand end of said sleeve projects leftward out of the bearing, C7. At the left hand end of said sleeve a nut, C14, surrounds said shaft and bears against said sleeve. At the left of the nut, C14, a nut, C15, surrounds said shaft and bears against the nut, C14. By driving the nut, C14. forwardtoward the rightthe sleeve, C13, is

forced against the wheel, C12, Whereby said wheel is driven against the spacing ring, C11, and the latter is driven against the wheel, C10, and the latter is driven against i of. the machine.

the shoulder, C9. By this means, said wheels and said: spacing ring are firmly bound in position on the shaft, C8.

The cutter wheels, C10 and C12, serve the double purpose of supporting and controlling the sheet and of cooperating with the upper cutting member for the cutting of the sheet, as described in the patents above mentioned. ,The wheel, C10, also cooperates with an upper feed wheel, as hereinafter described.

A stationary cutter, F, extends between the wheels, C10 and C12. On the upper portion of each of the bearings, C6 and C7, is a forward extension, 016. Said extensions are parallel to each other and in upright planes. A bridge member, C17, connects the lower parts of said extensions. Said extensions and said bridge member are preferably ca st integral with the chair casting, G. The stationary cutter, F, is placed in the channel above the bridge member, O17, parallel to the planes of the wheels, C10 and C12. At each side of said cutter is a clamping block, F1. Set bolts, F2, extend horizontally through the extensions, G16, and bear agaii'ist said clamping blocks, whereby said blocks are made to bear against the stationary cutter. When said bolts have been loosened, the cutter may be shifted into its precise position and there secured by again driving the bolts forward. The rear end of said cutter rises to the level of the upper parts of the wheel, C10 and C12, and extends rearward into position to be engaged by the forward edge of the upper reciprocatory cutter. the stationary cutter rests upon and is sup ported by the spacing ring, U11. ()n the part, B, of the body of the machine is an upright, reciprocatory member, B1, to which the upper reciprocatory cutter, B2, is

clamped by means of a plate, B3, and bolts,

li f. The lower end of said cutter is of proper widthto enter the space between the wheels, (10 and (J12, and exert a shearing ction in conjunction with the edges of said wheels. The forward edge of said reciprocatory cutter is adapted to pass the rear edge of the stationary cutter so closely as to exert a shearingaction. In its reciprocation, the upper twitter rises above the sheet, D, of material whicn is to be out. In

its descent, said cutter moves below'the lower face of said sheet and below the upper edge of the stationary cutter, F.

Above the wheel, U10, and at the right hand face of the reciprooatory cutter is a feed roller, E, supported on a journal, E1, resting in a bearing, E2. Said bearing is supported by :1. member, E3, which is reciprocable in an upright bearing, E4, which is. supported by the part, B, of the body Said member, E3, is nor- The rear end of the lower face of mally pressed down yieldingly by. a spring and may be lifted arbitrarily by the aid of means described in my patent, No. 1,208,847, above mentioned.

The sheet, D, is pressed by the wheel, E, and the wheel, Glihand the latter is driven by the rotation ofthe shaft, ()8, contra-clockwise as shown in Fig. 2, whereby the sheet is carried rearward. During each downward movement of the upper cutter, the front edge of said cutter cuts in cooperation with the rear edge of the lower cutter and the side edges of the reciprocatory cutter cuts in cooperation with thewheels, C10 and C12, as described in the patents above mentioned. The size of the pieces thus cut from the sheet, D, depends upon the distance the sheet is fed between the strokes of the reciprocatory cutter.

A clearing bar, G, is placed below the spacing ring, C11, and between the lower portions of the wheels, C10 and C12, said bar resting on the upper face of the base of the chair casting, (l.

Said bar is secured in position by a wedge-form key, G1, extending transversely across said bar and beneath the lower faces of the extensions, C16.

At its rear end the bar extends below the wheels, (310' and (112, and the upper face of saidbar is concaved to conform to the perimeter of the spacing ring; and the rearend of the bar is inclined from the spacing ring forward and downward to the lower face of said bar,-whereby a chisel-like edge is presented by said bar to the exterior face of the spacing ring. During the rotation of said ring and Wheels, (310 and C12, said edge of said bar bears against the adjacent side faces of said wheels and serves as a wiper or scraper to remove from said faces any foreign object or material adhering to said faces. Pieces cut from the sheet, D, and lodging in the channel between the Wheels, (110 and C12, meet the rear end of said bar and are forced out of said channel by said bar.

Directly behind the rear end of said bar, a throat, G2, extends downward through the chair casting C, and the adjacent portion of the body, A. The chips which are cut from the sheet, D, lodge in the channel between the wheels, C10 and C12, and are afterward released by the clearing bar, G, and fall by gravity downward through said throat. The rear end of the bar, G, is so positioned as to make a clear way for the falling of each waste piece by gravity upon the instant of its release from engagement in the channel between the wheels, U10 and 012. Thus .a positive clearing of said channel is effected, and the waste pieces thus released are disposed of without accumulation and clogging. Extended practice has shown that this clearing mechanism operates Withsuch effectiveness as to eliminate all need of concern regarding disposition of the waste cut from the sheet, D. The elimination of said waste is carried on automatically and continuously without interference with any of the parts of the mechanism.

I claim as my invention:

1. In a machine of the nature described, the combination with a stationary cutter, a rotary cutter, and a reciprocatory cutter located above and working in conjunction with said stationary cutter and said rotary cutter for cutting, of a cylindrical supporting member bearing upward against the stationary cutter, a horizontal member located below and bearing upward against said supporting member in approximate alinement with the reciprocatory cutter, and a stationary member forming a firm support for said supporting member in approximate alinement with the reciprocatory cutter, to the end that the cutting end of the stationary cutter may receive firm support for resisting the downward blows imparted by the reciprocatory cutter, substantially as described.

2. In a machine of the nature described, the combination with a stationary cutter, a rotary cutter, and a reciprocatory cutter located above and Working in conjunction with said stationary cutter and said rotary cutter for cutting, of a spacing ring bearing upward against the stationary cutter, a horizontal member located below and bearing upward against said spacing ring in approximate alinement with the reciprocatory cutter, and a stationary member forming a firm support for said clearing member in approximate alinement with the reciprocatory cutter, to the end that the cutting end of the stationary cutter may receive firm support for resisting the downward blows imparted by the reciprocatory cutter, substantially as described.

In a machine of the nature described, the combination with a stationary cutter, a rotary cutter, and a reciprocatory cutter located above and working in conjunction with said stationary cutter and said rotary cutter for cutting, a spacing ring bearing upward against the stationary cutter, a clearing member located below and bearing upward'against said supporting member in approximate alinement with the reciprocatory cutter, and a stationary member forming a firm support for said clearing member in approximate alinement with the reciprocatory cutter, to the end that the cutting end of the stationary cutter may receive firm support for resisting the downward blows imparted by the reciprocatory cutter, substantially as described.

4. In a machine ofthe nature described, the combination with a stationary cutter, a rotary cutter, and a reciprocatory cutter located above and working in conjunction with said stationary cutter and said rotary cutter for cutting, of a cylindrical supporting member bearing upwardagainst the stationary cutter, a horizontal member located below and bearing upward against said supporting member in approximate alinement with the reciprocatory cutter,a stationary member forming a firm support for said supporting member in approximate alinement with the reciprocatory cutter, to the end that the cutting end of the stationary cutter may receive firm support for resisting the blows imparted by the reciprocatory cutter, and a wedge-form key located above and binding said supporting member to its seat, substantially as described.

5. In a machine of the nature described,

the combination with a stationary cutter, a

rotary cutter, a reciprocatory cutter worklng in con unction with said stationary cutter and said rotary cutter for cutting, of a horizontal clearing member positioned at the side of the rotary cutter, a horizontal, stationary support upon which the'clearing member rests, a stationarv member located above the clearing member and lateral to the rotary cutting member, and a wedge- I the clearing member rests, a stationary member located above the clearing member and lateral to the rotary cutting member, and a wedge-form key driven between the clearing member and said lateral extension for binding the clearing member down upon its horizontal support, substantially as described.

In testimony whereof I have signed my name this 19th day of September, in the year one thousand nine hundred and seventeen.

WILLIAM F. SIMPSON. 

